The bright white Bogen CSD2X2U-V2 Drop-In Ceiling Speaker  is an easy-to-install 2 x 2' ceiling tile speaker for use in commercial or public spaces. They accept 8-ohm or 70/25V inputs, easily install into a 2 x 2' cut-out in your existing ceiling tile, and can be easily converted into IP speakers or IP intercom speakers. To install the speaker into a 2 x 4' ceiling grid, simply cut the ceiling tile in half and install the included support rail for a precise fit. The 8" cone speaker has a 10 oz magnet with a 70/25V, 4W transformer.